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The National Academies

TCRP C-05 [Completed]

Impact of Radio Frequency Refarming on Transit Communications

  Project Data
Funds: $142,151
Research Agency: Arthur D. Little, Inc.
Principal Investigator: Jeffrey J. Maul
Effective Date: 9/26/1994
Completion Date: 12/31/1995

Information is provided concerning the Federal Communications Commission (FCC) rules governing the refarming of the land mobile radio spectrum and their impacts on current and future transit communication system requirements. A nontechnical executive summary is presented that describes the rules issued in June 1995 by the FCC regarding the refarming of radio frequencies, provides an overview of the impacts of radio frequency refarming, and offers potential courses of action for transit and paratransit systems. In addition, more detailed technical information is provided for communications specialists, and includes several examples of potential cost impacts to transit and paratransit systems.

The FCC has decided to use "refarming" to help mitigate radio frequency congestion and increase spectrum efficiency in the private land mobile radio bands (frequencies below 512 MHz). Refarming is the term used for reduction in bandwidth allocated to radio channels in the designated bands. The refarming of frequencies has potential impacts on transit and paratransit communications systems and on capital procurement of communications equipment. FCC rules governing radio frequency refarming were issued in June 1995.

Research was undertaken by Arthur D. Little, Inc., to assist transit and paratransit agencies in formulating plans for future actions in response to the FCC decision to refarm radio frequencies by providing information on the impacts of the FCC's rules. The researchers defined the scope of the FCC rules as they relate to the transit and paratransit industry. Once defined, the researchers characterized and assessed the impacts on the industry. To assist in this effort, a representative sample of transit and paratransit systems was surveyed to determine the types of communications systems and applications currently in use and planned for the future. Based on impacts identified for current and future communications-system applications, a number of potential courses of action for transit and paratransit systems were identified for consideration in response to the FCC rules. The results have been published as TCRP Report No. 11 "Impact of Radio Frequency Refarming on Transit Communications."

TCRP Report No. 11 is also available in portable document format (PDF). (A free copy of Adobe Acrobat reader is available at www.adobe.com.) Double-click on the files below to access the report.

Front Matter;
Chapter 1: Introduction and Research Approach;
Chapter 2: Findings; Appendices A, B, and C
(1.03 MB)

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